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FAIR VALUE MEASUREMENTS - Information about Significant Unobservable Inputs Used for Recurring Fair Value Measurements for Level 3 MSRs (Detail) - Fair Value, Measurements, Recurring - Level 3 | Mar. 31, 2025 USD ($) | Dec. 31, 2024 USD ($)
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Discount rate | Minimum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.062 | 0.074
Discount rate | Maximum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.122 | 0.124
Discount rate | Weighted Average |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.082 | 0.084
Prepayment rate | Minimum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.044 | 0.047
Prepayment rate | Maximum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.213 | 0.172
Prepayment rate | Weighted Average |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.055 | 0.056
Delinquency rate | Minimum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.002 | 0.002
Delinquency rate | Maximum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.039 | 0.041
Delinquency rate | Weighted Average |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.012 | 0.013
Cost to service | Minimum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 83 | 83
Cost to service | Maximum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 98 | 99
Cost to service | Weighted Average |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 87 | 87

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